IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > Life Cycle Assessment > Greenhouse Gases >

Biomass Production & Processing

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Parameters related to the emission factors for the production and processing of biomass are shown on the Biomass Production & Processing parameter screen.

This screen is only shown when biomass is used as a fuel. There may be up to three instantiations of this screen, depending on how many biomasses are used in the blend. The title of the screen will indicate which fuel is being referenced, e.g. Fuel 1 (Biomass) Production & Processing.

All emission factors on this screen are expressed as units CO2 equivalent per unit fuel.

The following parameters are available:

•Biomass Type: The model will attempt to choose a biomass that is closest to the one you're using. You may override this choice if if you wish. The options are:

•Switchgrass

•Miscanthus

•Hybrid Poplar

•Torrefied Wood

•Wheat Straw

•Corn Stover

•Pine Spruce Chips

•Land Use Change: (only shown for energy crops)

•Cropland Prior to Direct Change: This refers to the percent of cropland present in the land prior to direct land use change.

•Pastureland Prior to Direct Change: This refers to the percent of pastureland present in the land prior to direct land use change.

•Indirect LUC / Direct LUC: This refers to the fraction of a hectare of indirect land use change in a remote area, resulting from the conversion of one hectare in direct land use change.

•Direct LUC Emissions: This emission factor accounts for the CO2 equivalent produced as a result of direct land use change.

•Indirect LUC Emissions: This emission factor accounts for the CO2 equivalent produced as a result of indirect land use change.

•Total Emissions: This is the total land use change emission factor, calculated from the values given above. It is highlighted in yellow and is shown for reference only.

•Fuel Production:

•CO2 Uptake: Plants absorb some CO2 as they grow. The CO2 uptake emission factor accounts for this reduction in CO2.

•Cultivation Emissions: This emission factor accounts for the CO2 equivalent produced as a result of biomass cultivation.

•Harvesting Emissions: This emission factor accounts for the CO2 equivalent produced as a result of biomass harvesting.

•Total Emissions: This is the total emission factor for biomass production, calculated from the values given above. It is highlighted in yellow and is shown for reference only.

•Fuel Processing:

•Total Emissions: This is the total emission factor for biomass processing. It is highlighted in yellow.